diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
new file mode 100644
index 0000000..a580497
--- /dev/null
+++ b/.github/workflows/unit-tests.yml
@@ -0,0 +1,27 @@
+run-name: ${{ github.actor }} is running Unit Tests
+on:
+  push:
+    branches:
+      - main
+      - feature/*
+#  pull_request:
+#    branches:
+#      - develop
+
+permissions:
+  contents: write
+
+jobs:
+  unit-test:
+    strategy:
+      matrix:
+        php_version:
+          - 8.1
+          - 8.2
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: mage-os/github-actions/unit-test@main
+        with:
+          php_version: ${{ matrix.php_version }}
+          composer_auth: ${{ secrets.COMPOSER_AUTH }}
diff --git a/Test/Unit/Model/ConfigTest.php b/Test/Unit/Model/ConfigTest.php
new file mode 100644
index 0000000..464db96
--- /dev/null
+++ b/Test/Unit/Model/ConfigTest.php
@@ -0,0 +1,94 @@
+<?php
+
+declare(strict_types=1);
+
+namespace MageOS\GraphQlPlayground\Test\Unit\Model;
+
+use Magento\Framework\App\Config\ScopeConfigInterface;
+use Magento\Framework\App\State;
+use Magento\Store\Api\Data\StoreInterface;
+use Magento\Store\Model\ScopeInterface;
+use MageOS\GraphQlPlayground\Model\Config;
+use PHPUnit\Framework\TestCase;
+
+class ConfigTest extends TestCase
+{
+    /**
+     * @var State |\PHPUnit\Framework\MockObject\MockObject
+     */
+    private State $stateMock;
+
+    /**
+     * @var ScopeConfigInterface|\PHPUnit\Framework\MockObject\MockObject
+     */
+    private $scopeConfigMock;
+
+    /**
+     * @var Config
+     */
+    private $sut;
+
+    protected function setUp(): void
+    {
+        $this->stateMock = $this->createMock(State::class);
+        $this->scopeConfigMock = $this->createMock(ScopeConfigInterface::class);
+
+        $this->sut = new Config(
+            $this->stateMock,
+            $this->scopeConfigMock,
+        );
+    }
+
+    public function testIsEnabledInDeveloperMode(): void
+    {
+        $this->stateMock->expects($this->once())
+            ->method('getMode')
+            ->willReturn(State::MODE_DEVELOPER);
+
+        $this->scopeConfigMock->expects($this->never())->method('isSetFlag');
+
+        $this->assertTrue(
+            $this->sut->isEnabled(
+                $this->createMock(StoreInterface::class)
+            )
+        );
+    }
+
+    public function testIfIsEnabledBySettingTheRightConfig()
+    {
+        $this->stateMock->expects($this->once())
+            ->method('getMode')
+            ->willReturn(State::MODE_PRODUCTION);
+
+        $this->scopeConfigMock->expects($this->once())->method('isSetFlag')->with(
+            'dev/graphiql/enabled_in_production',
+            ScopeInterface::SCOPE_STORE,
+            $this->createMock(StoreInterface::class)
+        )->willReturn(true);
+
+        $this->assertTrue(
+            $this->sut->isEnabled(
+                $this->createMock(StoreInterface::class)
+            )
+        );
+    }
+
+    public function testIfIsDisabledBySettingTheRightConfig()
+    {
+        $this->stateMock->expects($this->once())
+            ->method('getMode')
+            ->willReturn(State::MODE_PRODUCTION);
+
+        $this->scopeConfigMock->expects($this->once())->method('isSetFlag')->with(
+            'dev/graphiql/enabled_in_production',
+            ScopeInterface::SCOPE_STORE,
+            $this->createMock(StoreInterface::class)
+        )->willReturn(false);
+
+        $this->assertFalse(
+            $this->sut->isEnabled(
+                $this->createMock(StoreInterface::class)
+            )
+        );
+    }
+}
diff --git a/composer.json b/composer.json
index 4de99cd..f4ac052 100644
--- a/composer.json
+++ b/composer.json
@@ -5,9 +5,18 @@
     "license": [
         "GPL-3.0-only"
     ],
+    "repositories": [
+      {
+        "type": "composer",
+        "url": "https://mirror.mage-os.org"
+      }
+    ],
     "require": {
         "php": ">=8.1.0",
-        "magento/framework": "*"
+        "magento/module-graph-ql": "*"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^9.5"
     },
     "autoload": {
         "files": [
@@ -15,6 +24,15 @@
         ],
         "psr-4": {
             "MageOS\\GraphQlPlayground\\": ""
-        }}
+        }
+    },
+    "scripts": {
+        "test": "phpunit"
+    },
+    "config": {
+        "allow-plugins": {
+            "magento/composer-dependency-version-audit-plugin": false,
+            "magento/magento-composer-installer": false
+        }
     }
 }
diff --git a/phpunit.xml.dist b/phpunit.xml.dist
new file mode 100644
index 0000000..34ac61a
--- /dev/null
+++ b/phpunit.xml.dist
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit colors="true"
+         verbose="true"
+         stopOnFailure="false">
+    <testsuites>
+        <testsuite name="Unit Tests">
+            <directory>Test/Unit</directory>
+        </testsuite>
+    </testsuites>
+    <php>
+        <ini name="error_reporting" value="E_ALL"/>
+        <ini name="display_errors" value="1"/>
+        <ini name="display_startup_errors" value="1"/>
+    </php>
+</phpunit>